Means for humidifying air.



W. G. R. BRAEMER & S. C. BLOOM.

MEANS FOR HUMIDIFYING AIR.

APPLICATION FILED mum. 1914.

1,1 34,976. Patented Apr. 6,1915.

WITNESSES MM 2 M I BY Z0 ATTORN EY INVENTORS a specification.

accurately, 3 5

.- sired temp WILLIAM an; BRAEMER AND SAMUEL c. moon, or CAMDEN,

. TQ WARREN WEBSIER 62; COMPANY,

I) srArrEs PATENT 013E150.

NEW JERSEY, ASSIGNOBS' A CORPORATION OF NEW JERSEY.

MEANS FOR HUMIDIFYIN'G AIR. t

To all whom it may concem:

Be it known that we, WILLIAM GJR. BRAE- MER and SAMUEL'C. BLooM,citizens of the United States, Y and residents of Camden, 'county ofCamden, and State of New Jersey, have invented an Improvement in Meansfor Humidifying Air, of which the following is The object of ourinvention is to provide apparatus by which to obtain a reasonably exacthumidified condition'of the air to bedelivered for use, and so that theaverage condition of the. humidified air thus produced-may be maintainedvery closely, approximatelyjt'o' the predetermined theoretical conditionrequired, the maintenance of this humidified condition of the air beingauto-' matically controlled.

In carrying out the method of operation which may be performed in ourimproved apparatus, the fresh air may, if too cold,& be first subjectedto the heat from tempering .coils, and-thentoan aqueous vaporof de-'erature to impart to. the air the requisite quantity of moisture toprovide an prevailing, which'will, when the humidified air isretempered' or'reheated, impart a temperature' which, in the subsequentuse of the humidified air, will furnish the'condition of"relativehumidity which'is required in the room or place to which the airis conveyed; and this absolute humidity is maintained preferably bymaintaining the temperature of thewater from which the vapor is producedsubstantially constant by 1 means of a thermostat subjected to thetemperature of the water from j which'is latiori isth "By the use of ourinve'nti or thermostats arranged at someonelplace i with the reqmrementat another place in sa-id the eliminators precipitated from .thehumidified air as it passes through they eliminators. ,Heretofore theregulation of the temperature conditions has been done by humidistats 1nthe general flow of humidified air, but owing ,to the fact thatdifferent strata or portions of the air'pas'sing' thgmgh thelarge he.apparatus, is

upon this condi tion at? one place would not-rbe fc'onsistent' i dtheaccuracyof tl'le'lregirv efore' materially's:a1fected'.;-. f

ou 31.11 of; the

body of air Specification of Letters iatent.

' part to it a temperature suitable for phshed. V I

, V the Patented Aprefi, 1915.

Application filed m'ay 14, 1914. Serial No. 838,415.

precipitated Water from .the air is automati cally mixed and returned tothe Water tank,

and this average mixture, thus taken, being a fair average of the entireprecipitated moisture of the body of humidified air at any moment, iscaused during its return flow to the tank to act upon a thermostat,which in turn controls the conditions within the apparatus for\causingthe fresh air to take up more or less moisture as the conditions mayrequire toinsure the proper humidification of the air to be delivered ina tem-' pered condition to the blower and maintain it as constant aspossible. The precipitated moisture from various portions of theeliminators, and hence from different portions of 'theflowing body. ofhumidified air, is caused to flow to a common passage and pro,- vide aconstantly moving water body which represents the average temperatureconditions of the humidified air leaving the eliminator's, and thismoving body of water is caused to act upon a thermostat which, controlsthe admission of steam or other heating medium to-the spray or vaporwater to'imposes of humidification of the air under our invention. Thesaid thermostat may control the humidity condition-of the )air in anyother convenient manner, if so desired. In this manner the innumerablesamples of'ss precipitated. water are continuously taken at every momentof the'operation of the apparatus, and-are being'mixed together and thetemperature thereof made toconstantly act upon. the thermostat, so thata most '90, I

accurate regulation of the moisture and temperature conditions of the.air are accom-- Qur invention will be better understood reference to thedrawings, in which:

, Figure 1, is a' plafnvie'w of the humidity-- ing' apparatus embodyingour invention, and

in which our improved method for. regulae tion may be can-iedout;--Fig.2 is a "transversesectional elevation of the same througlr the.eliminatorspand Fig. Bis a sectional elevatilon; corresponding to :Fig..2," of a modi-i f ed 'aform of apparatus for carrying out our invention.5

paratus and vprovid'esrm, longitudinal pas-"- sagewaywhich-receives",liatz qne end, air, and delivers the humidified an atthe the pur- 80 byf' other end by means of a blower 3, which is operatedby a suitable motor, said blower delivering the air to the conduit 4,whichleads to the room or place of use. The tubul-ar passage 2 containsin its length, apparatus fortempering or heating, supplying moisture,removing excess moisture and reheating. The fresh air on entering, isbrought in contact with the tempering coils 5, the temperature of whichmay be automatically regulated by controlling its steam supply from pipe16 by a motor valve 18, in turn controlled by a thermostat 19 as here'-inafter' described. The heated or tempered air is then passed into thehumidifying compartment 7 into which water vapor from nozzle 6 isprojected to impart to the heated air the moisture which is required tobe absorbed. This vapor is formed from water which is heated, by meansof steam, to a greater or less extentfto suit theconditions prevailingin the temperature of the water flowing from-the eliminators 8 into thetank 13 at thegbottom of compartment 7. The surplus moisture carried bythe air is removed by the eliminator structure 8, and the ainwhichpasses into thecompartment 9 should then be in the condition in which itwill have the necessary absolute quantity of moisture to meet therequirements of the air conditions to be deliveredto the room; but theabsolute humidity which is contained by the air at this point isutilized to provide the lower relative humidity which the air must haveafter it has been raised in temperature to the condition required whenit is delivered to the room and this increase of temperature andlowering of the" relative humidity may be performed by the reheatingc'oils 11. V

While the use of reheating coils-11 and temperature control thereof willenable the humidified air to be raised in temperature and its relativeHumidity lowered to the degrees required, nevertheless, coils 11 beingvaried in temperature, any of the usual regulated by-passes around thereheating coils may be employed, as is well known to those skilled inthis art, said reheating or special means therefor not forming anyessential part-of our invention;

The supply of steam to the spray water, to give it thepropertemperaturebefore being sprayed or vaporized by the nozzles 6 isregulated by a valve 24 operated bya motor 25, said motor beingcontrolled by the thermostat 15 extending into or arranged in thecompartment or passage 12 through which the water from the eliminators 8passes.

The valve 24: is arranged in the'steam pipe 16 and controls thedischarge of the steam through the rose nozzle 26 in the tank 13 whichreceives leading from the 'eliminators.

in place of the,

the-surplus spray water in cludingthe water from the compartment 12- Apump 1% magma is employed to circulate the water from the tank 13 to thenozzles whereby the same water is repeatedly used, the loss due tohumidification of the air being made up by any ordinary float controlsupply valve (not shown). The temperature .of this water is maintainedby the addition of steam .under the control of the thermostat 15, asabove stated, sothat if the eliminator water should 10 in the conduit orpassage'24c between the I blower 3 and reheating coil 11. This'secondtempering coil 5 may be employed to assist the, coil 5, in providing atemperature to the I incoming fresh air before it is subjected to thewater vapor from the nozzles 6 which will insure a substantiallyconstant temperature with a definite absolute humidity before beingreheated, but either or both of these coils 5 and 5* may be omitted ifso desired, according to conditions of the fresh air to be treated. Itis also to be understood that the tempering coils or means forpreheatingthe fresh air may be made in any 'of he well known ways familiar tothose skil ed in the art, the motors'20 and 21, either or bothfunder thecontrol of their thermostats, being adapted to regulate the temperature.

It is to be understood, that while it'is most advantageous under someconditions to provide special means for accurately controllingthetemperature of the air before it is si lbjected to the aqueous vaporfrom the nozzles 6, our, invention is not so restricted, because if theatmospheric conditions are such that the air will, when treated with thetemperature conditions of the spray water,

have a temperature in the compartment 7 which will insure the requisiteabsolute humidity to provide the ultimate relative hu required, suchpretempering may be midity h lly omitted. 'Furthermore, the

partly or humidified air leaving the eliminators 8 may be saturated ornot, as may be desirableto suit the conditions-to be met, alcondition ofsaturation being in nosense an essential feature of our invention; andthis. latter will be understood by our pointing out that the adominating factor.

The various motors 20, 21, 25' and 33 are operated by compressed airsupplied to them by pipes23 and a compressor 22, and the action of saidcompressed air in operating the motors is regulated or controlledv bythe respective thermostats 10, 19, and 34,

15 struction of which manner of operating motor actuated valves is Wellknown in theart, and we do not restrict ourselves to such details.

In place of employing the particular coripassage or compartment 12 shownin Fig. 2 for conducting the heated water from the eliminators over thethermostat 15, We may employ any other suitable arrangement, such forexample as illustrated in Fig. 3. In this case, the eliminator waterpasses into a small vessel or compartment 12* open' at the top and inwhich the thermostat 15 is arranged, so as to be directly affected bythe temperature of the eliminator water. The overflow from the vesselparticular manner inwhich the heated water 12 falls into the tank 13 andmixes with the Water therein. It is immaterial to our invention as tothe particular construction or arrangement of'the eliminators or of thetherefrom is supplied to the thermostat, as any convenient arrangementmaybe employed so long as the normal variations in the temperature ofthe eliminator water is made to act upon the thermostat 15.

The operation is as follows :The air bei g supplied atsuitable-temperature, is subjected to the humidiiying action. of theWater vapor from the nozzles 6 and becomes 40 humidified with moistureatlthe predetermined temperature. This humidified air then passesthrough the eliminators 8, where the mechanically suspended moisture ispreoipitated and conveyed to the chamber 12 on its Way back to the tank13. The humidified air then passes through the'reheatin'g coils l1 and,in its condition of higher temperature and lower relative humidity, isdeliveredtothe place of use. The water from 5 air passing atsubstantially any period of time. Any variation in the temperature ofthis eliminator water aflects the thermostat 15 and insures control ofthe admission of steam to the'tank water by the nozzle 26 to 0 at alltimes control its temperature to suit the humidification required. Thishumidi- 1 fication under the control of thewet bulb temperature of theair may if desired, with thermostatic control by the I dry bulb.temperature of'the humidified air as to saturation; 4

' out of the method herein which the air passes the eliminators 8has'the same temperature be supplemented,-

also, the latter controlling the tempering of the air before subjectionthereof to the aqueous vapor.

We have shown the apparatus in the form we .havepreferred for thepractical carrying do not restrict ourselves to the detailsof the saidapparatus, as these may be modified Without departing from the spirit oftheiins vention. 1 In this the method, as that forms the subject matterof a divisional application.

Having now described our invention, what we claim as new and desire tosecure'by Letters Patent, is

1. .A humidifying apparatus, comprising a tubular passage open at oneend to the atmosphere, combined with a blower for sucking on thecontents of the passage at the other end, means for supplying an aqueousvapor to the air passing through the. passage, a tank for receiving thesurplus water from the vapor, means for circulating the water from thetank to the meansto supply eliminators through for removing thesuspended moisture therefrom,,means for supplying steam to the water inthe tank, and a thermostat arranged to be acted upon by the eliminatorwater for controlling the supply of steam to the water in the tank. 1 2.A humidifying apparatus,"comprising a tubular passage open atone end tothe at- .mosphere, combined with a blower sucking -on the contents ofthe passageway at the other end, means to supply an aqueous vapor to theair passing through the passageway, heating coilsfor tempering the freshair on its way from the. atmosphere to the means for supplying theaqueous vapor, an eliminator through which the humidified air passes forremoving the suspended moisture therefrom and having a conduit 'fordelivering the water from the eliminator, a therthe aqueous vapor,

eliminator water in the .conduit forhco'ntrol: ling the temperature ofthe aqueous vapor, and a thermos-tat operated by thetemperatureconditions of the air for controlling the heat of thetempering coils, whereby the in-e;

application we make no claim to described, but, we

111. mostat operated by the condition of the flowing fresh air is causedto become humidifiedto provide the absolute humidity required to theair.

3. In a humidifying apparatus, a conduit through which air-is causedlflow through the conduit, means for tempering the .inflowing air, meansfor supply: ing aqueous vapor to the tempered air whereby itishumidified, eliminators for removto flow, com- .bined with ablower forcausing the air to ing the suspended-water from the. humidified air,means controlled by the temperature of the water separated by theeliminators for maintaining the temperature ofthe aqueous 'vaporaccording todahe requirements, and

means forrincreasing the temperature of the humidified air and loweringits relative humiditly after it leaves the eliminators.

4. n a humidifying apparatus, a conduit through which air is caused toflow, combined with a blower for causing the air to flow through theconduit, means for supplying aqueous vapor to the air flowingthrough theconduit to increase its humidity, eliminators for removing the suspendedwater from the humidified air, means controlled by the temperatureof thewater separated by the. eliminators for maintainingthe temperature ofthe aqueous'vapor to suit the requirements, and means for returning theeliminator water to the means for supplying the aqueous vapor to theair.

c 5. The combination of a conduit through which air passes and means fordrawing the air through the,conduit, with devices for supplying the airwith an excess of moisture whereby it becomes humidified to the desireddegree, eliminatorsfor removing the suspended or excess moisture fromthehumidified air, a thermostat subjected to the eliminator waterimmediately after its separation, and means controlled by the thermostatfor regulating the temperature of the aqueous vapor supplied to the air.

6. In a humidifying apparatus, a conduit through which fresh air iscirculated, tempering coils for heating the fresh air as it enters,means for supplying aqueous vapor to the tempered air, eliminators forremoving and collecting the suspended moisture from the humidified air,a thermostat actuated by the collected eliminator water for controllingthe temperature of vapor supplied to the tempered air, and a. thermostatactuated by the temperature of the humidified air to control the heat ofthe tempering coils.

In testimony of which invention we hereunto set our hands.

WILLIAM G. R. BRAEMER. SAMUEL C. BLOOM. Witnesses:

H. A. TERRELL, E. K. WEBSTER.

